Hep-Th, or high-energy theoretical physics, explores the fundamental building blocks of our universe and the forces that govern them. Researchers in this field use complex mathematics to understand everything from subatomic particles to the behavior of black holes, often pushing the boundaries of what we know about space and time.

At Gist.Science, we monitor the arXiv repository to ensure you stay ahead of the curve in this rapidly evolving discipline. For every new preprint uploaded to arXiv under this category, our team generates both accessible plain-language overviews and detailed technical summaries, making cutting-edge research understandable regardless of your background.

Below are the latest papers in high-energy theoretical physics, curated to help you navigate the most significant recent discoveries.

⚛️ quantum physics

Entangling Power and Symmetries in the Quantum Rabi Model

This paper demonstrates that time-averaged entangling power serves as an effective operator-level diagnostic for distinguishing between manifest U(1)U(1) symmetry and parameter-dependent hidden symmetries in the Quantum Rabi model family, revealing distinct spectral responses such as peaks at integer-bias points for the asymmetric model and dips for the Jaynes-Cummings limit.

Ian Low, Jens Koch, Sahel Ashhab2026-07-15
⚛️ high-energy theory

Low-Temperature Holographic Conductivity

This paper demonstrates that strong quantum fluctuations in the near-extremal throat of an asymptotically AdS4_4 black brane induce a non-monotonic temperature dependence in holographic electrical conductivity, causing it to decrease at low temperatures before rising as 1/T1/\sqrt{T}, a behavior confirmed by both an effective two-dimensional Schwarzian action and a four-dimensional gravitational path integral.

Sabyasachi Maulik, Leopoldo A. Pando Zayas, Jingchao Zhang2026-07-15
⚛️ high-energy theory

Low-temperature Quantum-corrected Holographic Transport with Momentum Relaxation

This paper demonstrates that quantum fluctuations of the near-AdS2_2 throat in near-extremal black branes with momentum relaxation induce a universal low-temperature enhancement in holographic transport coefficients, producing non-monotonic temperature dependencies for operators with scaling dimension Δ>1\Delta > 1 that closely resemble behaviors observed in correlated materials.

Suman Das, Sabyasachi Maulik, Leopoldo A. Pando Zayas, Jingchao Zhang2026-07-15
⚛️ high-energy theory

Composite worldline instantons and the nonperturbative particle decay in constant external electric and magnetic fields

This paper validates the composite worldline instanton approach for calculating the nonperturbative decay of charged particles in constant electric and magnetic fields by demonstrating its agreement with self-energy and wave function overlap methods, while also exploring its potential application to proton decay and the effects of final-state entanglement.

Alexander Gorsky, Ivan Poluboyarinov2026-07-15
🔭 astrophysics

Solar System Probes for Scalar Field Dark Matter

This paper proposes and evaluates three complementary methods—ADAF-like flares from scalar clump encounters with Kuiper Belt Objects, atomic clock searches for oscillating fundamental constants, and astrometric microlensing—to constrain the properties of scalar field dark matter, demonstrating that Gaia-like astrometry can already probe compact clumps at the percent level for masses above 102M10^{-2}M_\odot.

Edmund Ghampson, Oem Trivedi, Robert J. Scherrer, Alfredo Gurrola2026-07-15